A cold front moved through the region, triggering showers and thunderstorms. A few of the storms produced heavy rainfall and caused flash flooding.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LSX wrote it up.
A cold front moved through the region, triggering showers and thunderstorms. A few of the storms produced heavy rainfall and caused flash flooding.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS St. Louis, MO wrote its last area forecast discussion before the first event at Jul 28, 10:48 PM CST, 2 hours 12 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED AVIATION NATIONAL WEATHER SERVICE ST LOUIS MO 1148 PM CDT WED JUL 28 2010 .DISCUSSION... /340 PM CDT WED JUL 28 2010/ FCST FOCUS FOR SHORT TERM WILL BE POPS FOR TONIGHT AND TOMORROW. THEN...FOCUS WILL TURN TO TEMPS THRU THE END OF THE WEEK BEFORE AN MCS THAT MAY AFFECT THE AREA ON FRI INTO SAT. CDFNT OVER SRN IA AND CNTL IL WILL CONTINUE TO PUSH SWD TONIGHT WITH TSRA ALONG/AHEAD OF THIS FNT AND PULSE TSRA ACROSS THE SRN HALF OF THE CWA. MDLS AGREE WELL WITH THIS CONVECTION DIMINISHING THIS EVE AND SHUD BE NEARLY GONE BY MIDNIGHT. SOME TSRA MAY BE POSSIBLE AGAIN THURS ACROSS THE SRN PORTIONS OF THE CWA WHERE THE FNT WILL BE IN THE MORNING. THIS CHANCE SHUD BE SHORT LIVED AS THE FNT CONTINUES TO PUSH SWD. THIS FNT WILL TRY TO LIFT BACK NWD AS A WRMFNT THURS NIGHT. MDLS SUGGEST MCS DEVELOPMENT ACROSS THE NRN PLAIN ON THURS AND PROPAGATING SEWD ALONG THIS BNDY...REACHING THE CWA SOMETIME ON FRI. MDLS DIFFER EXACTLY WHERE THIS BNDY WILL BE AS THE MCS REACHES THE CWA...BUT SHUD BE ACROSS THE WRN COUNTIES. TSRA CHANCES WILL SPREAD ACROSS THE REMAINDER OF THE CWA FRI NIGHT INTO SAT. THE SECOND HALF OF THE WEEKEND IS EXPECTED TO BE DRY. TRENDED TWD THE ECMWF WITH STRONG GEM SUPPORT FOR THE EXTD. MDLS PROG THE NEXT CDFNT TO AFFECT THE CWA AS EARLY AS LATE MON NIGHT. FOR TEMPS...TRENDED TWD THE COOLER MOS/MDL GUIDE THRU FRI AND BEGAN SLOW WARMING TREND ON SAT. WENT WITH A PERSISTENCE FCST UNTIL MON WITH MDLS SUGGESTING WARM TEMPS ON MON AHEAD OF THE CDFNT. CURRENT FCST BRINGS HEAT INDEX VALUES AROUND THE 100 DEGREE MARK. THESE VALUES MAY BE HIGHER DEPENDING UPON DEWPOINTS. CURRENT DEWPOINT FCST IS ON THE CONSERVATIVE SIDE WITH ECMWF DEPICTING RATHER DRY SFC RIDGE SETTLING OVER PLACE. TILLY && .AVIATION... /1136 PM CDT WED JUL 28 2010/ COMPLEX OF TSRA IS MOVING SSWWD OVR CNTRL/NERN MO AND EXPECT IT TO MOVE THROUGH KCOU WITH A BRIEF IFR VSBYS/CIGS IN +RA. EXPECT DRY AND VFR CONDITIONS THE NEXT 24-30 HOURS. COLD FRONT ROUGHLY ALONG A KUIN-KMCI LINE WILL CONTINUE TO MOVE SLOWLY SEWD. LGT/VRB WINDS WILL BECOME N-NELY AND INCREASE SLIGHTLY DURING THE DAY THURSDAY. SPECIFICS FOR KSTL...MAIN COMPLEX OF STORMS WILL MISS KSTL TO THE WEST. SCT SHRA/ISOLD TSRA MAY STILL AFFECT THE AIRPORT THROUGH 08Z. THEN EXPECT DRY AND VFR CONDITIONS THEREAFTER. BRITT && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && WFO LSX
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 755 PM CDT WED JUL 28 2010 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-291115- GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL- MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL- CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX MO- LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-ST. CHARLES MO-FRANKLIN MO- ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO- WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO- MADISON MO-REYNOLDS MO- 755 PM CDT WED JUL 28 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT SCATTERED THUNDERSTORMS WILL CONTINUE THIS EVENING. SOME OF THE THUNDERSTORMS COULD BECOME SEVERE AND CAPABLE OF PRODUCING WIND GUSTS OF 60 MPH. LOCALLY HEAVY RAINFALL AND FLASH FLOODING OF LOW LYING AREAS WILL ALSO BE POSSIBLE WHERE THUNDERSTORMS MOVE REPEATEDLY ACROSS THE SAME LOCATION. MODERATE RIVER FLOODING CONTINUES FOR MUCH OF THE MISSISSIPPI RIVER. SEE THE APPROPRIATE FLOOD STATEMENTS FOR SPECIFIC DETAILS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS A CHANCE OF THUNDERSTORMS ACROSS PORTIONS OF THE AREA FROM THURSDAY THROUGH SATURDAY...AND AGAIN ON MONDAY NIGHT AND TUESDAY...AS SERIES OF FRONTS WAVER ACROSS THE MIDDLE MISSISSIPPI VALLEY. MODERATE TO MAJOR RIVER FLOODING IS FORECAST FOR MUCH OF THE MISSISSIPPI RIVER. SEE THE APPROPRIATE FLOOD STATEMENTS FOR SPECIFIC DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ASKED TO RELAY SEVERE WEATHER AND FLOODING REPORTS TO THE NATIONAL WEATHER SERVICE IN ST. LOUIS. && FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1 KANOFSKY
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 806 PM CDT WED JUL 28 2010 ILZ095>097-290145- ADAMS IL-BROWN IL-PIKE IL- 806 PM CDT WED JUL 28 2010 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN ADAMS...SOUTHERN BROWN AND NORTHEASTERN PIKE COUNTIES IN WEST CENTRAL ILLINOIS UNTIL 845 PM CDT... AT 802 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES NORTH OF MEREDOSIA TO 7 MILES NORTHEAST OF PAYSON...AND MOVING SOUTHEAST AT 35 MPH. WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE... PITTSFIELD... BEVERLY... GRIGGSVILLE... VERSAILLES... KINGSTON... FISHHOOK... CHAMBERSBURG... BAYLIS... PERRY... NEW SALEM... VALLEY CITY... DETROIT... IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. BRITT
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1012 PM CDT WED JUL 28 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1011 PM HEAVY RAIN BEVERLY 39.79N 90.99W
07/28/2010 M1.80 INCH ADAMS IL STORM CHASER
ADAMS PIKE COUNTY LINE - SINCE 830 PM
&&
DYEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1021 PM CDT WED JUL 28 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1018 PM FLOOD HANNIBAL 39.71N 91.38W
07/28/2010 MARION MO LAW ENFORCEMENT
WATER OF UNKNOWN DEPTH COVERING PART OF WARREN BARETT
DRIVE
&&
BRITTThe St Louis radar (KLSX), 138 km away, was scanning. The volume nearest the first event began at 06:58 UTC.
2 flash flood. Local standard time, as filed.
Up to five inches of rain fell in a short amount of time causing flash flooding. Several roads were flooded including Route Z just south of Centralia. One vehicle drove into the flood waters on Route Z and got stuck, so a water rescue had to be performed. No one was injured in the incident.
Up to three inches of rain fell in a short amount of time causing flash flooding. Several roads were flooded including the intersection of U.S. Highway 54 and County Road 424 and Highway KK west of Laddonia. One car was washed off the road in this location. No one was injured in the incident.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2010Every state in 2010This day in weather historyWarnings in Missouri, July 2010
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 253808, 253809.